Gideon frisbee



G. FRISBEE] GRUSHING MILL.

Patented Nov. 26, 1889.

(No Model.)

Ewe/ 2071 44m UNITED STATES PATENT OFFICE.

GIDEON FRISBEE, OF NEW YORK, N. Y.

CRUSHING-MILL.

SPECIFICATION forming part of Letters Patent No. 415,941, dated November 26, 1889.

Application filed April 28, 1887, Serial No. 236,419- (No model.)

To all whom it may concern.-

Be it known that I, GIDEON FRISBEE, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Crushing-Mills, of which the following is a description in such full, clear, concise, and exact terms as will enable any one skilled in the art or science to which my invention belongs to make and use the same, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon.

My invention relates to that class of crushing-machines which employ loose crushingrollers operating against the concave surface of a crushing-ring. In such machines it is necessary to provide some kind of driver, which, acting against the crushing-roller, will cause it to revolve about the center of the crushing ring, and will cause it to bear against the concave surface of the said ring by the action of centrifugal force.

My present invention consists in a novel driver of improved construction to be employed in such machines.

Referring to the drawings accompanying this specification, Figure 1 is a longitudinal vertical section through the mill, with the side plate or washer I removed, illustrating such parts of the machine as immediately relate to my present invention; and Fig. 2 illustrates detail parts of the mill, partially in cross-section, taken on the line 00 on, Fig. 1.

It is to be understood that the drawings and specification are not intended as an illustration and description of the entire mill. This mill is now well known in the market as the Frisbee-Lucop Mill, and this specification is intended only as an illustration and description of my present improvements on that mill. Only such parts, therefore, of said Frisbee-Lucop mill are here described and illustrated as are necessary to enable others skilled in the art to which my invention appertains to make and use the same.

Referring to the drawings,F is the outside casing of the mill, and E is the ring against which the pulverizing and grinding are done. B B are grinding and crushing rollers op erating against. the inside surface of the ring E.

A A are carriers or disks secured upon a central shaft S, and between which the rollers 13 are held. D is an arm, also secured to said carriers by means of bolts passing through the holes lot the arms D and corresponding holes in the disks. The disks and arms are thus bolted together solid. The disks rotate in the direction of the arrow and carry with them the drivers P (which will be hereinafter more fully described) and the arms D and the pulverizing-rollers B. The drivers R propel the pulverizing-rollers B, which are made without shafts or gudgeons, around the center of the crushing-ring E, and these rollers B are therefore by centrifugal force thrown out against the inside s'urface'of the ring E, against which they bear with a degree of force proportional to their velocity. The arms D prevent the rollers B falling, when the mill is stopped, to the bottom of the chamber. The material to be crushed is fed into the hopper L, and (by means of devices not shown) is thrown against the inside surface of the ring E, where it is acted on and crushed by the revolving rollers B. It is subsequently discharged from the mill.

The general construction and operation of the Frisbee-Lucop mill are now so well understood that a further description thereof is not considered necessary here.

Prior to the date of filing this application for Letters Patent various devices have been used to propel the crushing-rollers B, the object being to provide a stout and efficient driver and at the same time one which would not speedily wear out or require repair. Driving-segments have been employed, as have also rotating drivers carried in journalbearing or rotating on a fixed shaft, and also stationary driving-cylinders. I prefer the stationary driving cylinder, because it is more durable and efiicient than the other drivers. In Letters Patent granted to me March 9, 1886, No. 337,570, to which reference is here made for a fuller description of the same, I have described such a stationary cylindrical driver and also means for adj usting or renewing it when it becomes worn by a H, by contact with the-rotating and revolving crushing-roll B, is also caused to revolve, and this in turn communicates motion to the rollers G,, said rollers are thus caused to roll around the cylinder P, thereby reducing friction to a minimum and diminishing the consequent wear of the parts. The rollers G G are preferably held, as shown at Fig. 2, between the side plates I, which retain them in position, and which side plates, being preferably beveled at their ends, serve to center the ring II, which is correspondingly beveled, and keep it from hearing unduly against the sides of the carriers A, while the surrounding parts protect the rollers G and the other operating parts from grit or particles of the material being pulverized in the mill, which would increase the friction and also the wear and tear on the device.

By the use of the anti-friction device I have described the necessity for adjusting the driver to present different surfaces to the wear of the crushing-rollers, as described in my said Letters Patent, is entirely avoided, since the wear is equal on all parts of the ring H, and the parts when Worn out can be readily and cheaply renewed.

Having thus described my invention,I claim and desire to secure by Letters Patent 1. In a pulverizing-rnill, the combination of a crushing-roller, a crushing-ring, a driving-cylinder, a nest of anti-friction rollers resting on the periphery of said cylinder, and a wearing-ring incasing said roller, substantially as described.

2. In a pulverizing-mill, the combination of a crushing-roller, a crushing-ring, a driving-cylinder, a nest of anti-friction rollers resting on the periphery of said cylinder, and a Wearing-ring and side plates incasing said rollers, substantially as described.

3. In a pulverizing-mill, the combination of a crushing-roller, a crushing-ring, a nonrotating driving-cylinder, a nest of anti-friction rollers resting on the periphery of said cylinder, and a wearing-ring incasing said rollers, substantially as described.

4. In a pulverizing-mill, adriver consisting of the combination of a non-rotating cylinder, side plates I, beveled on their rims, a Wearing-ring correspondingly beveled, and a series of anti-friction rollers confined between said cylinder, side plates, and ring, substantially as and for the purposes set forth.

GIDEON FRISBEE. Witnesses:

J. EDGAR BULL, SAML. R. TAYLOR. 

